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Buyers Guide & Information

Best 4000 PSI Pressure Washers Reviewed

These are the best heavy-duty models on the market for your pressure washing cleaning requirements.

by JohnL

A pressure washer provides exceptional cleaning in half the time it takes a garden hose to deliver the same kind of clean.

You can handle difficult washing tasks such as getting rid of oil stains on your front porch, or dust in hard to reach places, with the right pressure washer in your hands.

We reviewed the best PSI pressure washers to evaluate their efficiency. Go through the 4000 psi pressure washer reviews here to find the best ones for your needs.

Image

Model

Pump Type

GPM

Check Price

SIMPSON Cleaning ALH4240 Aluminum Gas Pressure...

SIMPSON Cleaning ALH4240

Cat industrial Triplex plunger

4.0

Champion 4200-PSI 4.0-GPM Wheelbarrow-Style Gas...

Champion Wheelbarrow-Style

Triplex

4.0

NorthStar Gas Cold Water Pressure Washer Power...

NorthStar Gas Cold Water

Cat redirect drive triplex

3.5

Generac 6565 4,200 PSI 4.0 GPM 420cc OHV Gas...

Generac 6565

Pro-Grade Triplex

4.0

SIMPSON Cleaning PS4240 4200 PSI at 4.0 GPM Gas...

SIMPSON Cleaning PS4240

AAA Industrial triplex plunger w/ PowerBoost Technology

4.0

Pressure Pro E4040HC Heavy Duty Professional 4,000...

Pressure Pro E4040HC

CAT Brand Triplex Plunger

4.0

Briggs & Stratton ELITE4000 4000 MAX PSI at 4.0...

Briggs & Stratton Gas

Premium Annovi Reverberi Triplex

4.0

What Is A 4000-PSI Pressure Washer Used For?

A 4000 PSI pressure washer is great for commercial use and cleaning large areas. So, if you run a cleaning and maintenance business, this is an excellent purchase to help you deliver the cleanest clean possible to your clients.

With the best 4000 PSI pressure washer, you can save a considerable amount of time with effortless cleaning.


Benefits Of 4000 PSI Pressure Washers Over Smaller Models

Pressure washers can be used for residential cleaning purposes as well. Those who own a 4000-PSI pressure washer will vouch for how capable it is at removing industry level stains without needing a lot of time, effort, and energy. Here are some of its many benefits:

  • Removes germs and bacteria
  • Strips away old paint
  • Cleans sidewalks
  • Washes away oil and grease stains
  • Sanitizes equipment
  • Disinfects surfaces, etc.

Watch this video to learn about more benefits you can reap by using a pressure washer.


4000 PSI Pressure Washer Buying Guide

When choosing the best pressure washer with 4000 PSI, look at the following traits:

Cleaning Power & Flow Rate

An ordinary garden hose allows water to flow at approximately 10 gallons per minute (GPM), at 30 to 50 pounds per square inch (PSI). Whereas, even the most straightforward pressure washer can generate a minimum of 1.6 GPM and a PSI of 1750 or more, which delivers more cleaning power with less water consumption. You can achieve brilliant results with a 4000 PSI pressure washer, owing to its industrial strength for producing high-pressure blasts of water.

Power Source (Gas vs. Electric)

If you require an in-house pressure washer for lighter tasks, an electric pressure washer is a good option. These are less expensive and clean from 1400 to 1700 PSI. Gas pressure washers generally have 1800 to 4000 PSI – making them robust enough for regular cleaning tasks over larger areas. However, these might not be safe to use in places with little or no ventilation because they exude fumes.

Engine Capacity (HP)

While searching for the best 4000 PSI pressure washer pump, you have to make sure that the machine has adequate engine capacity, i.e., measured in horsepower. It relates to the amount of pressure and volume produced by the pump.

Pump Type (Belt Drive Vs. Direct Drive)

The majority of commercial and industrial style pressure washers are belt drives that can perform more than 20 hours of cleaning jobs per week. This is possible because the pressure pump circulates at lower RPM, which in turn reduces the vibration and heat, leading to less wear and tear. But Direct Drive pressure washers are generally easy to be carried around as they are durable and compact. However, they run at twice the RPM as opposed to the belt-driven mechanism.

Portability & Weight

Generally speaking, pressure washers for domestic use tend to be portable but lack power, whereas high PSI machines are many at times vehicle-mounted. In short, the weight and portability of pressure washers depend on your usage and how much pressure is required.

Extra Features & Accessories

Your high-powered 4000 psi pressure washer might offer additional features and accessories. For instance, a pressure washer may also include interchangeable nozzles, automatic low-fuel cut-off, extra water tanks, coated pistons, and long-range hoses. Find out what comes along with your chosen 4000 psi pressure washer, as stock accessories tend to be more durable as opposed to purchasing separate equipment.

Water Temperature Handling (Hot Water Vs. Cold Water)

If you deal with greases and hard to remove oil stains, a 4000 psi hot water pressure washer can get it done in lesser time and environmental impact, and the result is outstanding. The temperature can go as high as 311 degrees Fahrenheit, which disinfects surfaces swiftly and requires less detergent. On the contrary, cold water pressure is adequate for removing dust, dirt, and other debris; however, it won’t do well with stubborn stains. Watch this video to know about the differences between hot water and cold water pressure washers.

Price & Warranty

The bigger the machine, and the more features it has, the more it’ll cost. However, you can save a considerable amount on utility bills as a 4000 psi pressure washer will consume less water. When it comes to warranty, each 4000 psi pressure washer model has different types of coverage in effect.


7 Best 4000 PSI Pressure Washers Reviewed

Refer to the following detailed 4000 psi pressure washer reviews and choose the best pressure washer 4000 psi for your needs.

1. SIMPSON Cleaning ALH4240

Our top Pick!

Power Source

Gas

Pump Type

Cat industrial Triplex plunger

GPM

4.0

Weight

109.9 lbs.

Warranty

2 Year Limited Pump

10 Year Limited Frame

90 Day Limited Accessory

 3 Year Limited Engine

If you are in the market to find the best 4000 psi pressure washer, you must have come across Simpson 4000 psi pressure washer. It tops our list of 4000 psi pressure washer reviews with a 16,800 CU rating, which makes it one of the most potent 4000 psi pressure washer out there. The Simpson 4000 PSI pressure washer can seamlessly handle all commercial cleaning jobs, so if you own a cleaning company, this will be an ideal purchase. It can help in graffiti removal, cleaning decks, vehicle cleaning, porch cleaning, etc.

The device has been built to withstand weather changes, dampness, and other unfavorable environments. Also, the Simpson 4000 PSI pressure washer can stand up to bumps, scrapes, and knocks easily. When unboxed, you will find five nozzles that include a 0 degree, 15 degrees, 25 degrees, and 40-degree nozzle, and also a detergent nozzle that’s soap compatible.

Plus, there is a 50-foot long steel hose for a superb job when cleaning those hard to reach places. There is also a storage compartment to keep all attachments and accessories in one place. Overall, a splendid machine, which is why you will find almost all Simpson 4000 psi pressure washer reviews to be positive.              

Pros

  • Has a storage section
  • Tires are of high-quality
  • Not as heavy as other 4000 psi pressure washers

Cons

  • Some users did not like the included soap dispenser

2. Champion Wheelbarrow-Style

Most Versatile 4000 PSI model

Power Source

Gas

Pump Type

Triplex

GPM

4.0

Weight

138 lbs.

Warranty

2 Years Limited Lifetime Free Technical Support

Next, we have the Champion Wheelbarrow-Style Gas in our 4000 PSI pressure washer reviews. This is because this pressure washer has an exceptional 4200 PSI and 4.0 GPM rating, and it comes with an Annovi Reverberi Triplex Pump. The Champion Wheelbarrow-Style Gas pressure washer’s design and tires make it easy to be transported, which makes it an excellent solution for cleaning outdoor furniture, patios, decks, fences, trucks, cars, boats, farms, etc.

Out of the box, this 4200 PSI pressure washer comes with five hoses:

  • 0 degrees
  • 15 degrees
  • 25 degrees
  • 40 degrees
  • Soap compliant hose

The pressure washer hose gun has a comfort grip, which makes it easy to carry out more extensive cleaning procedures. The Champion Wheelbarrow-Style Gas pressure washer also includes a 50 feet hose for high pressure and a four feet detergent hose. There is a storage compartment to keep all accessories in place, which also helps in transporting the machine with ease.

Additionally, this Champion Wheelbarrow-Style Gas pressure washer has a 389cc Champion single-cylinder OHV engine along with with an oil capacity of 1.2 qt., and a fuel tank of 1.6 gallons. To top it all, it includes a sensor that shuts off the machine when it is low on oil.

Pros

  • 50-foot large spray gun for comprehensive cleanups
  • Low-oil cut-off sensor
  • High-quality pump

Cons

  • Some users want a better warranty policy

3. NorthStar Gas Cold Water

Best For Cold Water

Power Source

Gas

Pump Type

Cat redirect drive triplex

GPM

3.5

Weight

191 lbs.

Warranty

4-Year Consumer Limited

2-Year Commercial Limited

 3-Year Limited Engine

The NorthStar Gas Cold Water Pressure secures the third position in our top picks among the best 4000 psi pressure washer. This is because the North Star pressure washer 4000 psi is relatively quiet as compared to other pressure washers in this category. This is quite surprising as it comes with a Honda GX90 389cc engine.

Also, the North Star pressure washer with 4000 PSI has a horizontal shaft, which makes it five times more durable then pressure washers that have a vertical shaft design. Furthermore, the machines come with a Comet pump that has a brass manifold making it perfect for the long-haul – a thermal protector safeguards all internal components.

As a pushdown cart, the North Star pressure washer 4000 PSI looks like a bulky machine, but you will be surprised by how easy it is to maneuver and transport. Pushing this model around is easy because of its well-constructed tires and also because of the way its tank is designed. Overall, if you want to rid your yard from dirt, dust, etc. the NorthStar Gas Cold Water Pressure Washer is a one of a kind machine that can handle all your cleaning needs effortlessly.

Pros

  • Does not make a lot of noise
  • Comes with a direct-drive motor
  • Many safety features are in place

Cons

  • Some people had trouble assembling it; however, the instruction manual can help with that

4. Generac 6565

Best Commercial Model

Power Source

Gas

Pump Type

Pro-Grade Triplex

GPM

4.0

Weight

146.5 lbs.

Warranty

3 Years Limited

Next in our list of best pressure washers is the Generac 6565, a gas engine washer with remarkable cleaning capabilities. The reason we included this in our 4000 PSI pressure washer reviews is because of its superior 12.3 Horse Power and an incredible 4200 PSI. Its 420cc Generac OHV Engine is known for being fuel-efficient, and the way its valves are designed allows for quieter operation. It also has a low-oil cut-off sensor that helps protect the machine.

Another important reason for a pressure washer’s longevity is having the right pump, and this 4200 PSI pressure washer’s Pro-grade triplex pump is highly regarded for its toughness. As a matter of fact, the Generac 6565’s pump lasts 4x more than other axial pumps, owing to its brilliant ability to disintegrate heat. Above all, the Generac 6565 comes with five different sized nozzles, because all cleaning tasks might not need the same pressure. Overall, you can remove the toughest of stains swiftly, making the Generac 6565 the best commercial model.

Pros

  • Can be easily stored
  • Low-oil cut-off sensor
  • 50-foot hose for efficient cleanups
  • Powerful pump and engine

Cons

  • Not as environmentally friendly as other washers

5. SIMPSON Cleaning PS4240

Top Portable Option

Power Source

Gas

Pump Type

AAA Industrial triplex plunger w/ PowerBoost Technology

GPM

4.0

Weight

141 lbs.

Warranty

3 Year Limited

Pump - 5 Year Limited

 Frame - 10 Year Limited

Next, we have included the high-powered Simpson 4000 PSI pressure washer that can deal with all cleanup jobs. We are sure that in your quest for the best 4000 PSI pressure washer, you may come across many instances of Simpson 4000 PSI pressure washer reviews because of its promising results.

It comes equipped with a Honda GX Engine, that’s known for reliability and exceptional strength of up to 12 horsepower – this is also one of the reasons for its remarkable delivery of 4200 PSI and 4.0 GPM. This pressure washer has a small frame, yet the performance is at par or better than other more significant frame variants, this also helps in efficiently transporting the machine as needed.

Plus, the frame is made from welded steel so that it will sustain over a long time, and even if any issues are encountered, you can get them fixed under the 10-year warranty. The Simpson 4000 PSI pressure washer has an AAA Industrial triplex plunger pump, which can pump 4200 PSI at 4.0 gallons per minute. Also, there are dual large-sized ball bearings in place to help reduce wear and tear.

Overall, the machine's exceptional quality and brilliant performance are the reasons why it is highly regarded, and this is why you come across many Simpson 4000 PSI pressure washer reviews.

Pros

  • Welded steel frame for better durability
  • Thirteen-inch tires which help in smoothly transporting the washer
  • High-pressure pump for exceptional performance

Cons

  • Some users complained about how heavy it is

6. Pressure Pro E4040HC

Best Heavy Duty Model

Power Source

Gas

Pump Type

CAT Brand Triplex Plunger

GPM

4.0

Weight

99 lbs.

Warranty

Lifetime Frame

If you are looking for a heavy-duty and affordable 4000 PSI pressure washer – the Pressure Pro E4040HC is, without a doubt, a viable option.  The reason we have added this to our list is because of its cleaning capabilities and economical price point.

The washer can be transported easily, thanks to its aircraft-grade aluminum frame and top-notch tires that can handle bumps and jumps. But, it does require you to put in a bit of strength to move it around as the Pressure Pro E4040HC comes with two tires; however, it is not as heavy as other washers and can be operated by a single person.

Plus, the Pressure Pro E4040HC is rated for CARB compliance that allows it to be used without any adverse effects on the environment.  In the box, you will find five angled nozzles that are easy to attach and remove.

There’s also a 50 feet long steel-reinforced hose, which protects the property when the hose is being dragged. The best part is that the Pressure Pro E4040HC has a thermo-sensor and a low-oil shutdown feature, so you can be assured that the pressure washer will not overheat.

Pros

  • Highly efficient with 16,000 CU
  • An engine of 13 HP
  • A 50-foot hose for wide-area cleaning.
  • Made from durable material

Cons

  • Customers suggested that the given storage space should be increased
  • Even though it is easy to maneuver, but two more tires would have helped

7. Briggs & Stratton Gas

Quality Gas-Powered Option

Power Source

Gas

Pump Type

Premium Annovi Reverberi Triplex

GPM

4.0

Weight

100 lbs.

Warranty

2 Years Limited Consumer

 3 Months Limited Commercial

We found some great Briggs and Stratton 4000 PSI pressure washer reviews, putting this powerful machine in our list of the best gas-powered washers. The Briggs & Stratton Gas Pressure Washer comes with five spray tips that can be easily connected, plus it has an automatic detergent mixer that ensures that the right amount of detergent is infused with each spray cycle.

Furthermore, this model has a temperature-sensitive thermal relief valve – all overheated water is drained to ensure that the pump remains protected. The best part is that the Briggs & Stratton Gas Pressure Washer is powered by an OHV engine and has a 4000 PSI, and a 4.0 GPM – also, it comes with a 50-foot hose and five spray tips for superior performance.

The included spray tips are 0 degrees, 15 degrees, 25 degrees, 40 degrees, and there’s also a spray tip for soap dispensing.We hope our Briggs and Stratton 4000 PSI pressure washer review has provided you enough evidence to understand why this brand and model are chosen for many.

Pros

  • Brilliant hose and wand
  • The manufacturer is popular and highly-regarded
  • The pressure washer is easy to move around

Cons

  • Some users were not satisfied with the packaging

Comparing Electric Vs. Gas For Higher PSI Machines

Pressure washers are either powered by Gas or Electricity; both have their pros and cons. Deciding between a 4000 PSI electric pressure washer or gas pressure washer will be easier when you understand the inherent differences between the two.

Aspect

Gas-powered

Electric-powered

Cost

High priced

Low priced

Durability

Lasts for a long time

Does not last as long

Function

Can clean large areas, and remove stubborn stains such as oils, grease, etc.

 For commercial use.

For smaller jobs such that require regular cleaning.

 For domestic use

Portability

A heavy machine that is not easy to carry.

A light device that can be taken around as needed.

PSI

1400-1700

1800-4000

Water Usage

Low

High


How To Setup & Safely Use a Heavy-Duty Pressure Washer

Once you have bought or rented a 4000 PSI pressure washer, take the following steps to use it effectively:

  1. 1
    If it's an electric washer, ensure that it can easily be connected to the socket
  2. 2
    For gas-powered 4000 psi pressure washers, check if there are adequate oil and fuel, remember, not to overfill it
  3. 3
    Pick the right nozzle size for the cleaning task at hand:
  • 0 degree to get rid of hard-to-remove stains, dirt, and grime
  • 15 degrees for paint removal
  • 25 degrees for cleaning driveways
  • 40 degrees for cleaning fragile items
  • 65 degrees to disperse detergent over a substantially sized area.
  1. 4
    Connect the heavy-duty 4000 psi pressure washer to the water source
  2. 5
    Ensure that the pressure of the water from its source is at par with the requirements of the pressure washer
  3. 6
    Make sure that the detergent tube is not clogged
  4. 7
    First, turn on the water supply and run the machine on low settings to test if the nozzle is functioning properly
  5. 8
    Adjust the washer’s settings as per the need at hand

Precautionary Measures

  • Wear protective gear for eyes and ears
  • Make sure not to come in contact with the high-pressure steam
  • Wear suitable clothing and footwear
  • Hold on to the spray wand tightly with both hands
  • Never point in the direction of another person or animal even when the machine is switched off
  • Keep it away from children
  • Ensure that you are not washing any electrical equipment

Care & Maintenance

Take the following steps to make sure that your 4000 PSI pressure washer continues to serve you for a very long time:

Before Using:

  1. 1
    Check O-rings of pressure hose and replace if damaged
  2. 2
    Ensure nozzle is fixed properly
  3. 3
    Make sure there is no dirt, filth or anything else in the nozzle
  4. 4
    Don’t use old gas
  5. 5
    Replace spark plugs if they are corroded
  6. 6
    Keep a check on the air filter and change it if needed
  7. 7
    Don’t run the pressure washer until the pressure of the water source is precisely what is required by the pressure washer

After Using:

  1. 1
    Switch power off
  2. 2
    Clean all detergent/soap/chemical from the pressure washer
  3. 3
    Wash away all accumulated dirt and debris in the 4000 psi pressure washer
  4. 4
    Drain all water before putting the machine in storage

Make sure that your pressure washer is stored away from children, has adequate ventilation, and can't come in contact with rain, snow, or sun.


Frequently Asked Questions

Can I use a 4000-psi pressure washer indoors?
A 4000 PSI pressure washer is meant for commercial and industrial use; however, if you decide to use the machine inside, make sure that there is ample ventilation.
Can a 4000-psi pressure washer damage paint coating on metal and wooden surfaces?
Yes, a 4000 PSI pressure washer can easily remove paint, especially if you are using a 15-degree nozzle.
What kind of cleaning agent or detergent should I use?
You can use:
Use soap or detergent from a reputed brand – cheap variants can be harmful to the machine, the surface, and for your hands.
Is it better to use hot, cold, or warm water with my pressure washer?
A 4000 psi hot water pressure washer can get rid of hard to remove stains such as oil and grease, whereas cold water drives away dust and dirt, but it’s pretty ineffective at removing stubborn stains.
How much water is used for heavy-duty pressure washing?
Basically, the higher the PSI, the less water will be used, as cleaning becomes effortless at high pressures, and it requires less time.
Do heavy-duty pressure washers have adjustable pressure?
If your 4000 PSI pressure washer has a wand or a nozzle, you can easily adjust the pressure.

Conclusion

All pressure washers we included in our reviews were chosen based on cleaning power, power source, horsepower, portability, durability, and cost of the machines. Out of the many best 4000 PSI pressure washers reviewed here, our top pick is Simpson 4000 PSI pressure washer, because it’s perfect according to all our standards.

Make sure you choose the right pressure washer, which fulfills your cleaning needs and requirements and is within your budget. Remember to keep up with the maintenance so it can function for the long-haul – and keep it locked away from children.

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